mirror of
https://git.in.rschanz.org/ryan77627/guix.git
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d82ac48b07
When computing channel instance derivations. This is useful when you want to generate compatible derivations that can be run with a daemon that potentially doesn't support builtin builders that the daemon you're using to generate the derivations has. I'm looking at this in particular because I want to use this in the data service, since it provides substitutes for derivations, and since these can be built on other machines, it's useful to control which builtin builders they depend on. Fixes: <https://issues.guix.gnu.org/67250>. * build-aux/build-self.scm (build-program): Accept #:built-in-builders and pass along to port->connection or open-connection as approriate. (build): Accept and pass on #:built-in-builders. * guix/channels.scm (build-from-source, build-channel-instance, channel-instance-derivations, channel-instances->manifest, channel-instances->derivation): Accept and pass on #:built-in-builders. Change-Id: I315c990de66c6f7dca25a859165a5568abe385ea
520 lines
23 KiB
Scheme
520 lines
23 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (build-self)
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#:use-module (gnu)
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#:use-module (guix)
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#:use-module (guix ui)
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#:use-module (guix config)
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#:use-module (guix modules)
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#:use-module (guix build-system gnu)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-19)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-35)
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#:use-module (rnrs io ports)
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#:use-module (ice-9 match)
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#:use-module (ice-9 popen)
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#:export (build))
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;;; Commentary:
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;;;
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;;; When loaded, this module returns a monadic procedure of at least one
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;;; argument: the source tree to build. It returns a derivation that
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;;; builds it.
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;;;
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;;; This file uses modules provided by the already-installed Guix. Those
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;;; modules may be arbitrarily old compared to the version we want to
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;;; build. Because of that, it must rely on the smallest set of features
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;;; that are likely to be provided by the (guix) and (gnu) modules, and by
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;;; Guile itself, forever and ever.
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;;;
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;;; Code:
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;;;
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;;; Generating (guix config).
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;;;
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;;; This is copied from (guix self) because we cannot assume (guix self) is
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;;; available at this point.
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;;;
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(define %persona-variables
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;; (guix config) variables that define Guix's persona.
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'(%guix-package-name
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%guix-version
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%guix-bug-report-address
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%guix-home-page-url))
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(define %config-variables
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;; (guix config) variables corresponding to Guix configuration.
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(letrec-syntax ((variables (syntax-rules ()
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((_)
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'())
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((_ variable rest ...)
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(cons `(variable . ,variable)
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(variables rest ...))))))
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(variables %localstatedir %storedir %sysconfdir %system)))
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(define* (make-config.scm #:key gzip xz bzip2
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(package-name "GNU Guix")
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(package-version "0")
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(bug-report-address "bug-guix@gnu.org")
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(home-page-url "https://guix.gnu.org"))
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;; Hack so that Geiser is not confused.
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(define defmod 'define-module)
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(scheme-file "config.scm"
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#~(begin
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(#$defmod (guix config)
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#:export (%guix-package-name
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%guix-version
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%guix-bug-report-address
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%guix-home-page-url
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%store-directory
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%state-directory
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%store-database-directory
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%config-directory
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%libz
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%gzip
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%bzip2
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%xz))
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;; XXX: Work around <http://bugs.gnu.org/15602>.
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(eval-when (expand load eval)
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#$@(map (match-lambda
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((name . value)
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#~(define-public #$name #$value)))
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%config-variables)
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(define %store-directory
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(or (and=> (getenv "NIX_STORE_DIR") canonicalize-path)
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%storedir))
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(define %state-directory
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;; This must match `NIX_STATE_DIR' as defined in
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;; `nix/local.mk'.
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(or (getenv "GUIX_STATE_DIRECTORY")
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(string-append %localstatedir "/guix")))
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(define %store-database-directory
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(or (getenv "GUIX_DATABASE_DIRECTORY")
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(string-append %state-directory "/db")))
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(define %config-directory
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;; This must match `GUIX_CONFIGURATION_DIRECTORY' as
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;; defined in `nix/local.mk'.
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(or (getenv "GUIX_CONFIGURATION_DIRECTORY")
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(string-append %sysconfdir "/guix")))
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(define %guix-package-name #$package-name)
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(define %guix-version #$package-version)
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(define %guix-bug-report-address #$bug-report-address)
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(define %guix-home-page-url #$home-page-url)
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(define %gzip
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#+(and gzip (file-append gzip "/bin/gzip")))
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(define %bzip2
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#+(and bzip2 (file-append bzip2 "/bin/bzip2")))
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(define %xz
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#+(and xz (file-append xz "/bin/xz")))))))
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;;;
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;;; 'gexp->script'.
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;;;
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;;; This is our own variant of 'gexp->script' with an extra #:module-path
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;;; parameter, which was unavailable in (guix gexp) until commit
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;;; 1ae16033f34cebe802023922436883867010850f (March 2018.)
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;;;
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(define (load-path-expression modules path)
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"Return as a monadic value a gexp that sets '%load-path' and
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'%load-compiled-path' to point to MODULES, a list of module names. MODULES
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are searched for in PATH."
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(mlet %store-monad ((modules (imported-modules modules
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#:module-path path))
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(compiled (compiled-modules modules
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#:module-path path)))
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(return (gexp (eval-when (expand load eval)
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(set! %load-path
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(cons (ungexp modules) %load-path))
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(set! %load-compiled-path
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(cons (ungexp compiled)
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%load-compiled-path)))))))
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(define* (gexp->script name exp
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#:key (guile (default-guile))
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(module-path %load-path))
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"Return an executable script NAME that runs EXP using GUILE, with EXP's
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imported modules in its search path."
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(mlet %store-monad ((set-load-path
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(load-path-expression (gexp-modules exp)
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module-path)))
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(gexp->derivation name
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(gexp
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(call-with-output-file (ungexp output)
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(lambda (port)
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;; Note: that makes a long shebang. When the store
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;; is /gnu/store, that fits within the 128-byte
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;; limit imposed by Linux, but that may go beyond
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;; when running tests.
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(format port
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"#!~a/bin/guile --no-auto-compile~%!#~%"
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(ungexp guile))
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(write '(ungexp set-load-path) port)
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(write '(ungexp exp) port)
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(chmod port #o555))))
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#:module-path module-path)))
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(define (date-version-string)
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"Return the current date and hour in UTC timezone, for use as a poor
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person's version identifier."
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;; XXX: Replace with a Git commit id.
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(date->string (current-date 0) "~Y~m~d.~H"))
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(define guile-gcrypt
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;; The host Guix may or may not have 'guile-gcrypt', which was introduced in
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;; August 2018. If it has it, it's at least version 0.1.0, which is good
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;; enough. If it doesn't, specify our own package because the target Guix
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;; requires it.
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(match (find-best-packages-by-name "guile-gcrypt" #f)
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(()
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(package
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(name "guile-gcrypt")
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(version "0.1.0")
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(home-page "https://notabug.org/cwebber/guile-gcrypt")
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(source (origin
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(method url-fetch)
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(uri (string-append home-page "/archive/v" version ".tar.gz"))
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(sha256
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(base32
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"1gir7ifknbmbvjlql5j6wzk7bkb5lnmq80q59ngz43hhpclrk5k3"))
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(file-name (string-append name "-" version ".tar.gz"))))
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(build-system gnu-build-system)
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(arguments
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;; The 'bootstrap' phase appeared in 'core-updates', which was merged
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;; into 'master' ca. June 2018.
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'(#:phases (modify-phases %standard-phases
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(delete 'bootstrap)
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(add-before 'configure 'bootstrap
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(lambda _
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(unless (zero? (system* "autoreconf" "-vfi"))
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(error "autoreconf failed"))
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#t)))))
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(native-inputs
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`(("pkg-config" ,(specification->package "pkg-config"))
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("autoconf" ,(specification->package "autoconf"))
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("automake" ,(specification->package "automake"))
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("texinfo" ,(specification->package "texinfo"))))
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(inputs
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`(("guile" ,(specification->package "guile"))
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("libgcrypt" ,(specification->package "libgcrypt"))))
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(synopsis "Cryptography library for Guile using Libgcrypt")
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(description
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"Guile-Gcrypt provides a Guile 2.x interface to a subset of the
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GNU Libgcrypt crytographic library. It provides modules for cryptographic
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hash functions, message authentication codes (MAC), public-key cryptography,
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strong randomness, and more. It is implemented using the foreign function
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interface (FFI) of Guile.")
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(license #f))) ;license:gpl3+
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((package . _)
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package)))
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(define* (build-program source version
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#:optional (guile-version (effective-version))
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#:key (pull-version 0) (channel-metadata #f)
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built-in-builders)
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"Return a program that computes the derivation to build Guix from SOURCE.
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If BUILT-IN-BUILDERS is provided, it should be a list of
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strings and this will be used instead of the builtin builders provided by the
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build daemon, from within the generated build program."
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(define select?
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;; Select every module but (guix config) and non-Guix modules.
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;; Also exclude (guix channels): it is autoloaded by (guix describe), but
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;; only for peripheral functionality.
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(match-lambda
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(('guix 'config) #f)
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(('guix 'channels) #f)
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(('guix 'build 'download) #f) ;autoloaded by (guix download)
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(('guix _ ...) #t)
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(('gnu _ ...) #t)
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(_ #f)))
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(define fake-gcrypt-hash
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;; Fake (gcrypt hash) module; see below.
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(scheme-file "hash.scm"
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#~(define-module (gcrypt hash)
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#:export (sha1 sha256))))
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(define fake-git
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(scheme-file "git.scm" #~(define-module (git))))
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(with-imported-modules `(((guix config)
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=> ,(make-config.scm))
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;; To avoid relying on 'with-extensions', which was
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;; introduced in 0.15.0, provide a fake (gcrypt
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;; hash) just so that we can build modules, and
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;; adjust %LOAD-PATH later on.
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((gcrypt hash) => ,fake-gcrypt-hash)
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;; (guix git-download) depends on (git) but only
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;; for peripheral functionality. Provide a dummy
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;; (git) to placate it.
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((git) => ,fake-git)
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,@(source-module-closure `((guix store)
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(guix self)
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(guix derivations)
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(gnu packages bootstrap))
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(list source)
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#:select? select?))
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(gexp->script "compute-guix-derivation"
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#~(begin
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(use-modules (ice-9 match))
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(eval-when (expand load eval)
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;; (gnu packages …) modules are going to be looked up
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;; under SOURCE. (guix config) is looked up in FRONT.
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(match (command-line)
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((_ source _ ...)
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(match %load-path
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((front _ ...)
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(unless (string=? front source) ;already done?
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(set! %load-path
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(list source
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(string-append #$guile-gcrypt
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"/share/guile/site/"
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(effective-version))
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front)))))))
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;; Only load Guile-Gcrypt, our own modules, or those
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;; of Guile.
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(set! %load-compiled-path
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(cons (string-append #$guile-gcrypt "/lib/guile/"
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(effective-version)
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"/site-ccache")
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%load-compiled-path))
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;; Disable position recording to save time and space
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;; when loading the package modules.
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(read-disable 'positions))
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(use-modules (guix store)
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(guix self)
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(guix derivations)
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(srfi srfi-1))
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(match (command-line)
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((_ source system version protocol-version
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build-output)
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;; The current input port normally wraps a file
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;; descriptor connected to the daemon, or it is
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;; connected to /dev/null. In the former case, reuse
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;; the connection such that we inherit build options
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;; such as substitute URLs and so on; in the latter
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;; case, attempt to open a new connection.
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(let* ((proto (string->number protocol-version))
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(store (if (integer? proto)
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(port->connection
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(duplicate-port
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(current-input-port)
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"w+0")
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#:version proto
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#:built-in-builders
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'#$built-in-builders)
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(open-connection
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#:built-in-builders
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'#$built-in-builders)))
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(sock (socket AF_UNIX SOCK_STREAM 0)))
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;; Connect to BUILD-OUTPUT and send it the raw
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;; build output.
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(connect sock AF_UNIX build-output)
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(display
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(and=>
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;; Silence autoload warnings and the likes.
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(parameterize ((current-warning-port
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(%make-void-port "w"))
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(current-build-output-port sock))
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(run-with-store store
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(guix-derivation source version
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#$guile-version
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#:channel-metadata
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'#$channel-metadata
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#:pull-version
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#$pull-version)
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#:system system))
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derivation-file-name))))))
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#:module-path (list source))))
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(define (proxy input output)
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"Dump the contents of INPUT to OUTPUT until EOF is reached on INPUT.
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Display a spinner when nothing happens."
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(define spin
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(circular-list "-" "\\" "|" "/" "-" "\\" "|" "/"))
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(setvbuf input 'block 16384)
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(let loop ((spin spin))
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(match (select (list input) '() '() 1)
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((() () ())
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(when (isatty? (current-error-port))
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(display (string-append "\b" (car spin))
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(current-error-port))
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(force-output (current-error-port)))
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(loop (cdr spin)))
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(((_) () ())
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;; Read from INPUT as much as can be read without blocking.
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(let ((bv (get-bytevector-some input)))
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(unless (eof-object? bv)
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(put-bytevector output bv)
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(loop spin)))))))
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(define (call-with-clean-environment thunk)
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(let ((env (environ)))
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(dynamic-wind
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(lambda ()
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(environ '()))
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thunk
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(lambda ()
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(environ env)))))
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(define-syntax-rule (with-clean-environment exp ...)
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"Evaluate EXP in a context where zero environment variables are defined."
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(call-with-clean-environment (lambda () exp ...)))
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;; The procedure below is our return value.
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(define* (build source
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#:key verbose?
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(version (date-version-string)) channel-metadata
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system
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(pull-version 0)
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;; For the standalone Guix, default to Guile 3.0. For old
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;; versions of 'guix pull' (pre-0.15.0), we have to use the
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;; same Guile as the current one.
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(guile-version (if (> pull-version 0)
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"3.0"
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(effective-version)))
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built-in-builders
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#:allow-other-keys
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#:rest rest)
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"Return a derivation that unpacks SOURCE into STORE and compiles Scheme
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files."
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;; Build the build program and then use it as a trampoline to build from
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;; SOURCE.
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(mlet %store-monad ((build (build-program source version guile-version
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#:channel-metadata channel-metadata
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#:pull-version pull-version
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#:built-in-builders
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built-in-builders))
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(system (if system (return system) (current-system)))
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(home -> (getenv "HOME"))
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;; Note: Use the deprecated names here because the
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;; caller might be Guix <= 0.16.0.
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(port ((store-lift nix-server-socket)))
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(major ((store-lift nix-server-major-version)))
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(minor ((store-lift nix-server-minor-version))))
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(mbegin %store-monad
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;; Before 'with-build-handler' was implemented and used, we had to
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;; explicitly call 'show-what-to-build*'.
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(munless (module-defined? (resolve-module '(guix store))
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'with-build-handler)
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(show-what-to-build* (list build)))
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(built-derivations (list build))
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;; Use the port beneath the current store as the stdin of BUILD. This
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;; way, we know 'open-pipe*' will not close it on 'exec'. If PORT is
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;; not a file port (e.g., it's an SSH channel), then the subprocess's
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;; stdin will actually be /dev/null.
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(let* ((sock (socket AF_UNIX SOCK_STREAM 0))
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(node (let ((file (string-append (or (getenv "TMPDIR") "/tmp")
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"/guix-build-output-"
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(number->string (getpid)))))
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(bind sock AF_UNIX file)
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(listen sock 1)
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file))
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(pipe (with-input-from-port port
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(lambda ()
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;; Make sure BUILD is not influenced by
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;; $GUILE_LOAD_PATH & co.
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(with-clean-environment
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(setenv "GUILE_WARN_DEPRECATED" "no") ;be quiet and drive
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(setenv "COLUMNS" "120") ;show wider backtraces
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(when home
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;; Inherit HOME so that 'xdg-directory' works.
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||
(setenv "HOME" home))
|
||
(open-pipe* OPEN_READ
|
||
(derivation->output-path build)
|
||
source system version
|
||
(if (file-port? port)
|
||
(number->string
|
||
(logior major minor))
|
||
"none")
|
||
node))))))
|
||
(format (current-error-port) "Computing Guix derivation for '~a'... "
|
||
system)
|
||
|
||
;; Wait for a connection on SOCK and proxy build output so it can be
|
||
;; processed according to the settings currently in effect (build
|
||
;; traces, verbosity level, and so on).
|
||
(match (accept sock)
|
||
((port . _)
|
||
(close-port sock)
|
||
(delete-file node)
|
||
(proxy port (current-build-output-port))))
|
||
|
||
;; Now that the build output connection was closed, read the result, a
|
||
;; derivation file name, from PIPE.
|
||
(let ((str (get-string-all pipe))
|
||
(status (close-pipe pipe)))
|
||
(match str
|
||
((? eof-object?)
|
||
(error "build program failed" (list build status)))
|
||
((? derivation-path? drv)
|
||
(mbegin %store-monad
|
||
(return (newline (current-error-port)))
|
||
((store-lift add-temp-root) drv)
|
||
(return (read-derivation-from-file drv))))
|
||
("#f"
|
||
;; Unsupported PULL-VERSION.
|
||
(return #f))
|
||
((? string? str)
|
||
(raise (condition
|
||
(&message
|
||
(message (format #f "You found a bug: the program '~a'
|
||
failed to compute the derivation for Guix (version: ~s; system: ~s;
|
||
host version: ~s; pull-version: ~s).
|
||
Please report the COMPLETE output above by email to <~a>.~%"
|
||
(derivation->output-path build)
|
||
version system %guix-version pull-version
|
||
%guix-bug-report-address))))))))))))
|
||
|
||
;; This file is loaded by 'guix pull'; return it the build procedure.
|
||
build
|
||
|
||
;; Local Variables:
|
||
;; eval: (put 'with-load-path 'scheme-indent-function 1)
|
||
;; End:
|
||
|
||
;;; build-self.scm ends here
|